Musical drum tuning key



FIG. 1 is a front perspective view showing my new design for a musical drum tuning key;

FIG. 2 is a right side elevational view thereof, the left side elevational view being identical;

FIG. 3 is a front elevational view thereof, the rear elevational view being identical;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a musical drum tuning key, as shown and described. 